Tire-heating furnace



(No Model.)

H. ASMUS.

TIRE HEATING FURNACE.

No. 451,103. Patented Apr. 28, 1891.

UNITED STATES PATENT OFFICE.

HENRY A SMUS, OF PINE CITY, MINNESOTA.

TIRE-HEATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 451,103, dated April28, 1891.

Application filed December 20, 1890. Serial No. 375,299. (No model.)

nesota, have invented a new and useful Improvement in Tire HeatingFurnaces, of which the following is a description, reference being hadto the accompanying drawings, which are a part of this specification.

My in vention relates to a device constructed and arranged particularlyfor use as a furnace in which to heat and thereby expand metalwheel-tires for the purpose of setting them on the fellies of wheels.The device may be used for other purposes, such as a heater or as asmoke-house.

In the drawings, Figure 1 is a side elevation of the complete device,aportion of the front side wall being broken away and the top, bottom,and front end wall being shown in section. Fig. 2 is an elevation of therear end wall, the door thereon being swung open, showing theheatingchamber and wagontires therein in central vertical section. Fig.3 is a top plan view of the furnace-grates, the walls being shown inhorizontal section. Fig. 4 is a detail of the fire-chamber door hung onthe front end wall of the furnace.

The walls A A of the furnace are constructed of brick or other materialadapted to withstand a great heat and support the load of a number oftires hung thereon in the heating-chamber B. The heating-chamber B islocated in the upper part of the furnace and is of sufficient size toreceive therein the tires that are to be heated for the purpose ofsetting them. Metal pins 0 C and D D are fixed in one side wall of theheating-chamber B and project therefrom into the chamber, the pins 0 and0' being located near the top of the chamber centrally, and the pins Dand D'being located near the edges of the chamber at such point as to bejust within the greatest horizontal diameter of tires hung on the pins 0and O. The pins D and D are arranged to receive small or front-wheeltires E thereon within the circle of the larger or hind-wheel tires F,hung on the outer pins 0 and C. These pins-are of sufficient length toreceive thereon several tires on each set of pins. This heating-chamberis provided with a door G of sufiicient size to permit the tires to beplaced in and removed from the heating-chamber therethrough.

In the drawings the door G is shown as on the rear end wall of thefurnace; but the door may be made into this chamber through the sidewall in frontof the tire-supporting pins, if desired. A small swingingdoor H is hinged on the side Wall of this heating-chamber, closing anaperture through the wall into the chamber adapted for ventilatingpurposes. In locating the main door G in the side wall of the chamber itwill be found convenient to put the Ventilating-door H onto the largerdoor G, provided with a similar ventilatingaperture.

Below the heating-chamber B is the firechamber I, the fire-chamber beingseparated from the heating-chamber by a metal grate K, which rests on aledge therefor in the walls of the furnace at the bottom of theheatingchamber. Below the fire-chamber I there is an ash-pit L, which isseparated from the firechamber by the fire-grate M, resting on a ledgetherefor in the walls of the furnace at the bottom of the fire-chamber.A metal door N, provided with draft-openings closed by a slide 0, ishinged on the front end wall to close the aperture therethrough formingthe outer ends of the fire-chamber and ash-pit. A short chimney orsmoke-flue P, provided with a damper R, opens outwardly from the top ofthe heating-chamber.

My furnace is adapted for the use therein of either wood or coal as fuelwith which to produce the necessary combustion and heat for expandingthe tires. In use several small tires are put into the heating chamberthrough the door G and hung upon the hooks D D, and larger tires arehung on the hooks O and O. Thereupon the doors Gand H are closed and afire is built in the fire-chamber, the heat from which, rising into theheatingchamber B, causes the tires to sufficiently expand to be set inthe usual way on the fellies of wheels. The aperture closed by the doorH is also adapted to serve as a sight-aperture through which the tirescan be viewed to ascertain when they are sufficiently hot.

A removable bottom S, having small apertures, is provided, which isadapted to be placed upon and over the grate K when the furnace is to beused as asmoke-house. In such use a low smoldering fire is built in thefirechamber I, the smoke from which passes upwardly through theperforations in the bot tom S, filling the heating-chamber B with smoke,which chamber is for this purpose used as a receptacle for the articlesto be smoked.

What I claim as new, and desire to secure by'Letters Patent, is

1. A furnace comprising a fire-chamber, a heating-chamber above thefire-chamber, the heating-chamber being provided with an outlet forsmoke and gases, so that the products of combustion in the fire-chambercan pass into and to a limited extent through and out of theheating-chamber, pins fixed in the wall and projecting into the chamber,adapted to support thereon the articles to be heated, and a door openinginto the heating-chamber of sufficient size to admit tires therethrough,substantially as described.

2. Ihe combination, with the Walls of a furnace having a suitablefire-chamber and a heating-chamber above the-fire-chamber, of a grateinterposed between the heating-chamber and the fire-chamber, pins setinto the Wall of the furnace and projecting into the heating-chamber,which pins are arranged to receive and support a plurality of wagonwheeltires thereon, and a door closing a large and suitable aperture into theheating-chamber for the passage of the tires therethrough, substantiallyas described.

3. The combination, with the walls of a furnace having a heating-chamberabove a fire-chamber, of pins inserted in the wall of the furnace andprojecting into the heatingchamber, a large aperture having acorresponding door adapted for the passage of wagon Wheel tirestherethrough into the chamber, and a small aperture closed by a door inthe Wall of the heating-chamber opposite the walls in which thetire-supporting pins are fixed, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY ASMUS. Witnesses:

FRED A. HODGE, HERMANN BORCHERS.

